Solid-state single photon sources: the nanowire antenna

被引：204

作者：

Friedler, I. ^{[1
]}

Sauvan, C. ^{[1
]}

Hugonin, J. P. ^{[1
]}

Lalanne, P. ^{[1
]}

Claudon, J. ^{[2
]}

Gerard, J. M. ^{[2
]}

机构：

[1] Univ Paris Sud, Lab Charles Fabry, Inst Opt, CNRS, F-91127 Palaiseau, France

[2] Nanophys & Semicond Lab, CEA, INAC SP2M, F-38054 Grenoble, France

来源：

OPTICS EXPRESS | 2009年 / 17卷 / 04期

关键词：

QUANTUM DOTS; SPONTANEOUS-EMISSION; OPTICAL-FIBER; WAVE-GUIDES;

D O I：

10.1364/OE.17.002095

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We design several single-photon-sources based on the emission of a quantum dot embedded in a semiconductor (GaAs) nanowire. Through various taper designs, we engineer the nanowire ends to realize efficient metallic-dielectric mirrors and to reduce the divergence of the far-field radiation diagram. Using fully-vectorial calculations and a comprehensive Fabry-Perot model, we show that various realistic nanowire geometries may act as nanoantennas (volume of approximate to 0.05 lambda(3)) that assist funnelling the emitted photons into a single monomode channel. Typically, very high extraction efficiencies above 90% are predicted for a collection optics with a numerical aperture NA=0.85. In addition, since no frequency-selective effect is used in our design, this large efficiency is achieved over a remarkably broad spectral range, Delta lambda=70 nm at lambda= 950 nm. (C) 2009 Optical Society of America

引用

页码：2095 / 2110

页数：16

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